Compressed-air water-elevator.



F. T. SHAW COMPRESISED AIR WATER ELEVATOR. APPLICATION FILED AUG.2. 1915.

1 25 1 4, Patented Nov. 14,1916.

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I FRANK '1. SHAW, OF LORDSBURG, CALIFQBNIA.

COMPRESSED-AIR WATER-ELEVATOR.

mosaic.

Specification of Letters Patent.

Patented Nov. 14, 19116.

Application filed August 2, 1915. Serial 1%. 43,267.

To all :whom it may concern:

Be it known that I, FRANK T. SHAW, a

citizen of the United States, residing at Lordsburg, in the county of Los Angeles and State of California, have invented new and useful Improvements in Compressed-Air Water-Elevators, of which-the following is a specification.

This invention relates to compressed air Water elevators, and pertains especially to compressed air water elevators wherein a pair of air pressure pumping tanks are dis posed in a well or cistern, and air under pressure is alternately admitted to the tanks for discharging the water contained therein and then alternately connected to an air suction device.

It is an object of this invention to provide a compressed air water elevator with a valve for controlling the'air pressure and air suction, which will be positively operated by the pressure of the air within the chamhers.

It is another object of this invention to provide a compressed air water elevator with an air valve and mechanism for operating the valve which may be disposed above the surface of the ground and in position easy of access for repair and removal of parts.

It is a further object of this invention to" provide a compressed air water elevator having a pair of air pressure pumping tanks with a single valve operated-by pneumatics for connecting the tanks alternately to the air pressure and suction. I

I accomplish these objects by means of the embodiment-or" my invention illustrated in the accompanying drawing, in which:

Figure 1 is an elevation of my compressed air water elevator with parts of the pumping tanks broken away to disclose the in? terior of thetanks. Fig. 2 is an enlarged detail view. of my valve and the'linkage oonnection for operating it. Fig. 3 is a side view of a portion of a link as seen on the line 3-3 looking in the direction of the arrow.

' More specifically; a Well is indicated by the numeral 4. Disposed in the well are air pressure pumping tanks 5 and 6 which may be of any of the usual types and here shown as comprised of closed tanks having inlets 7 and 8 controlled by check valves 9 and 10. l/Vater discharge pipes 11 and 12 extend through the top of the tanks and to a point adjacent the bottom thereof, and are provlded with check valves 13 and 14 which prebackingup into the pumping tanks.

Condu1ts 11 and 12 are connected to a' common mean 15 which leads to the system to be supplied with water. Air conduits 16' v and 17 are connected to the top of the pump-' ing tanks 5 and 6. T-members 18 and 19 provide means for connecting conduits 20 and 21, which lead to pneumatics 22 and 23.

vent water in the conduits 11 and 12 from Pneumatics 22 and 23 are similar in structure and are here shown as comprised of cylinders 24 and 25 in which are disposed pistons 26 and 27. Piston rods 28 and 29 are connected to the pistons and pivotally con: nected by any convenient linkage to levers 30 and '31. Levers 30 and 31 are pivotally mounted intermediate the ends upon brackets 32- and 33 which are secured to the cylinders 24 and 25. A two-way four port valve 34 is connected to T-membcrs 18 and 19, to a conduit 36 which leads to the presi sure side of an air compressor and to a conduit 35 which leads to the suction' side .of an air compressor.

Valve 3% is of the oscillating type and has secured to the Walve stem 37 an arm 38. The arm 38 is secured at a point intermediate its ends to the stem 37. The ends of arm 38 are provided with hook portions 39 and 40. A tension spring 41 is secured to the arm 38 as indicated at 42, and to a bracket 43 mounted upon the valve casing. The point of attachment of the spring 41 and the bracket 43 is as indicated at 44 out of alinement with the valve stem 37, thereby providing a snap-over mechanism for completing the movement of the valve after. the arm 38 passes itsneutral position, .whiohis, asshown, a horizontal position of the arm 38. Links 46 and 47 are pivotally connected to arms 30 and 31. Each link is provided at the lower end with a longitudinal slot as "indicated at48 through which the hooks 39 and 44) of the arm 38 pass, thereby providing a lost motion connection. i

The operation of my pump is as follows: Suppose the valve is in such a position that it connects air suction conduit 35 with air conduit 17, thereby placing the tank 6 under a suction pressure. The check valve 10 will be lifted and water will enter the chamber through inlet 8, valve 14 controlling the water discharge conduit 12 being closed. Water continues to rise in tank 6 until it reaches a point above the water level 49, whereupon due to the tween the water level in the tank and the waterlevel in the well, the suction increases land acts upon piston 27 drawing the downwardly andwith it the piston rod 29, ,and rocks lever 31;

piston Lover 31 pulls the link 4:7 engaging the hook portion l of arm 38,

upon the spring moving is conveyed through" conduit 21 to piston 27 lifting the piston and with it the piston rod 29 rocking the lever 31 and lowering link 47. Due to the'slot 48 and link &7, arm 38 will not be moved as the link can be moved to a. lower position without the arm encountering the end of the slot. As the water rises in tankf and passes above the water level 49 in the well, the suction is increased in conduit 16 and acts upon piston 26 to move it downward, withit the rod 28, rockin lever-'30 and lifting link 46. Link 46 engages the hook 39 on arms 38, moves the arm to its horizontal position whereupon the spring 41 throws the arm over to the full open position of the valve. The operation continues, the tanks 5 and 6 being alternately connected to the air pressure and suction.

What I claim is:

1. A compressed air water elevator, comprising in combination a sure pumping tanks, an air conduit for each of said air pressure pumping tanks, an oscillating valve connected to each of said air conduits for controlling'connection of the conduits to a ,source of air pressure and suction, independent air motors connected to each of said air conduits, linkageconnected by lost motion means to said valve and to the. movable members of said air motors, ,and a snap-over device connected difierence of head be-' pair of air pres-' to said valve for completing movement thereof.

2. A compressed air water elevator, comprising in combination a pair of air pressure pumping tanks, an air conduit for each of said air pressure pumping tanks, a twoway four port oscillating valve connected to each of said air conduits to a source of air pressure, and to an air suction device, an arm on said valve, independent pneumatic motors connected to each of said air conduits, linkage connecting the movable members of said pneumatic motors and the val e arm including a link provided with an elongated slot through which said arm passes, and a snap-over device connected to said valve for completing movement thereof.

3. A compre d air water elevator, comprising in combination apair of air pressure pumping tanks, an air conduit for each of said air pressure pumping tanks, a twoway four port oscillating valve connected to each of said airIconduits to a source of air pressure and telan air suction device, an arm on said valve, independent single acting pneumatic motors connected to each of said air conduits comprising vertically disposed cylinders, linkage connecting the movable members of said pneumatic motors to the valve arm including a link provided with an elongated slot through which said arm passes, and a snap-over device secured to said V21."e for completing movement thereof.

4. A compressed air water elevator, comprising in combination a pair of air pressure pumping tanks, an air conduit for each of said air pressure pumping tanks, a twoway four port oscillating valveconnected to each of said air conduits to a source of air pressure, and to an air suction device,

an arm on said, valve, independent pneu matic motors connected to each of said air conduits, linkage connecting the movable valve arm including a link provided with an elongated slot through which said arm passes, and a spring secured tosaid arm to the valve case eccentric of said valve.

In witness that I claim the foregoing I have hereunto subscribed my name this 22d day of J uly, 1915.

FRANK T. SHAW.

members of said pneumatic motors to the 

